【分享】HAL串口的正确使用

/**

  ******************************************************************************

  * File Name          : USART.c

  * Description        : This file provides code for the configuration

  *                      of the USART instances.

  ******************************************************************************

  * This notice applies to any and all portions of this file

  * that are not between comment pairs USER CODE BEGIN and

  * USER CODE END. Other portions of this file, whether 

  * inserted by the user or by software development tools

  * are owned by their respective copyright owners.

  *

  * Copyright (c) 2018 STMicroelectronics International N.V. 

  * All rights reserved.

  *

  * Redistribution and use in source and binary forms, with or without 

  * modification, are permitted, provided that the following conditions are met:

  *

  * 1. Redistribution of source code must retain the above copyright notice, 

  *    this list of conditions and the following disclaimer.

  * 2. Redistributions in binary form must reproduce the above copyright notice,

  *    this list of conditions and the following disclaimer in the documentation

  *    and/or other materials provided with the distribution.

  * 3. Neither the name of STMicroelectronics nor the names of other 

  *    contributors to this software may be used to endorse or promote products 

  *    derived from this software without specific written permission.

  * 4. This software, including modifications and/or derivative works of this 

  *    software, must execute solely and exclusively on microcontroller or

  *    microprocessor devices manufactured by or for STMicroelectronics.

  * 5. Redistribution and use of this software other than as permitted under 

  *    this license is void and will automatically terminate your rights under 

  *    this license. 

  *

  * THIS SOFTWARE IS PROVIDED BY STMICROELECTRONICS AND CONTRIBUTORS "AS IS" 

  * AND ANY EXPRESS, IMPLIED OR STATUTORY WARRANTIES, INCLUDING, BUT NOT 

  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY, FITNESS FOR A 

  * PARTICULAR PURPOSE AND NON-INFRINGEMENT OF THIRD PARTY INTELLECTUAL PROPERTY

  * RIGHTS ARE DISCLAIMED TO THE FULLEST EXTENT PERMITTED BY LAW. IN NO EVENT 

  * SHALL STMICROELECTRONICS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,

  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT

  * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, 

  * OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF 

  * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING 

  * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,

  * EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

  *

  ******************************************************************************

  */



/* Includes ------------------------------------------------------------------*/

#include "usart.h"



#include "gpio.h"



/* USER CODE BEGIN 0 */

void (*UART1_Callback)(uint8_t)=NULL;

void (*UART2_Callback)(uint8_t)=NULL;

void (*UART3_Callback)(uint8_t)=NULL;

uint8_t a,b,c;

/* USER CODE END 0 */



UART_HandleTypeDef huart1;

UART_HandleTypeDef huart2;

UART_HandleTypeDef huart3;



/* USART1 init function */



void MX_USART1_UART_Init(void)

{



  huart1.Instance = USART1;

  huart1.Init.BaudRate = 9600;

  huart1.Init.WordLength = UART_WORDLENGTH_8B;

  huart1.Init.StopBits = UART_STOPBITS_1;

  huart1.Init.Parity = UART_PARITY_NONE;

  huart1.Init.Mode = UART_MODE_TX_RX;

  huart1.Init.HwFlowCtl = UART_HWCONTROL_NONE;

  huart1.Init.OverSampling = UART_OVERSAMPLING_16;

  if (HAL_UART_Init(&huart1) != HAL_OK)

  {

    _Error_Handler(__FILE__, __LINE__);

  }



}

/* USART2 init function */



void MX_USART2_UART_Init(void)

{



  huart2.Instance = USART2;

  huart2.Init.BaudRate = 9600;

  huart2.Init.WordLength = UART_WORDLENGTH_8B;

  huart2.Init.StopBits = UART_STOPBITS_1;

  huart2.Init.Parity = UART_PARITY_NONE;

  huart2.Init.Mode = UART_MODE_TX_RX;

  huart2.Init.HwFlowCtl = UART_HWCONTROL_NONE;

  huart2.Init.OverSampling = UART_OVERSAMPLING_16;

  if (HAL_UART_Init(&huart2) != HAL_OK)

  {

    _Error_Handler(__FILE__, __LINE__);

  }



}

/* USART3 init function */



void MX_USART3_UART_Init(void)

{



  huart3.Instance = USART3;

  huart3.Init.BaudRate = 9600;

  huart3.Init.WordLength = UART_WORDLENGTH_8B;

  huart3.Init.StopBits = UART_STOPBITS_1;

  huart3.Init.Parity = UART_PARITY_NONE;

  huart3.Init.Mode = UART_MODE_TX_RX;

  huart3.Init.HwFlowCtl = UART_HWCONTROL_NONE;

  huart3.Init.OverSampling = UART_OVERSAMPLING_16;

  if (HAL_UART_Init(&huart3) != HAL_OK)

  {

    _Error_Handler(__FILE__, __LINE__);

  }



}



void HAL_UART_MspInit(UART_HandleTypeDef* uartHandle)

{



  GPIO_InitTypeDef GPIO_InitStruct;

  if(uartHandle->Instance==USART1)

  {

  /* USER CODE BEGIN USART1_MspInit 0 */



  /* USER CODE END USART1_MspInit 0 */

    /* USART1 clock enable */

    __HAL_RCC_USART1_CLK_ENABLE();

  

    /**USART1 GPIO Configuration    

    PA9     ------> USART1_TX

    PA10     ------> USART1_RX 

    */

    GPIO_InitStruct.Pin = GPIO_PIN_9;

    GPIO_InitStruct.Mode = GPIO_MODE_AF_PP;

    GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_HIGH;

    HAL_GPIO_Init(GPIOA, &GPIO_InitStruct);



    GPIO_InitStruct.Pin = GPIO_PIN_10;

    GPIO_InitStruct.Mode = GPIO_MODE_INPUT;

    GPIO_InitStruct.Pull = GPIO_NOPULL;

    HAL_GPIO_Init(GPIOA, &GPIO_InitStruct);



    /* USART1 interrupt Init */

    HAL_NVIC_SetPriority(USART1_IRQn, 5, 0);

    HAL_NVIC_EnableIRQ(USART1_IRQn);

  /* USER CODE BEGIN USART1_MspInit 1 */



  /* USER CODE END USART1_MspInit 1 */

  }

  else if(uartHandle->Instance==USART2)

  {

  /* USER CODE BEGIN USART2_MspInit 0 */



  /* USER CODE END USART2_MspInit 0 */

    /* USART2 clock enable */

    __HAL_RCC_USART2_CLK_ENABLE();

  

    /**USART2 GPIO Configuration    

    PA2     ------> USART2_TX

    PA3     ------> USART2_RX 

    */

    GPIO_InitStruct.Pin = GPIO_PIN_2;

    GPIO_InitStruct.Mode = GPIO_MODE_AF_PP;

    GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_HIGH;

    HAL_GPIO_Init(GPIOA, &GPIO_InitStruct);



    GPIO_InitStruct.Pin = GPIO_PIN_3;

    GPIO_InitStruct.Mode = GPIO_MODE_INPUT;

    GPIO_InitStruct.Pull = GPIO_NOPULL;

    HAL_GPIO_Init(GPIOA, &GPIO_InitStruct);



    /* USART2 interrupt Init */

    HAL_NVIC_SetPriority(USART2_IRQn, 5, 0);

    HAL_NVIC_EnableIRQ(USART2_IRQn);

  /* USER CODE BEGIN USART2_MspInit 1 */



  /* USER CODE END USART2_MspInit 1 */

  }

  else if(uartHandle->Instance==USART3)

  {

  /* USER CODE BEGIN USART3_MspInit 0 */



  /* USER CODE END USART3_MspInit 0 */

    /* USART3 clock enable */

    __HAL_RCC_USART3_CLK_ENABLE();

  

    /**USART3 GPIO Configuration    

    PB10     ------> USART3_TX

    PB11     ------> USART3_RX 

    */

    GPIO_InitStruct.Pin = GPIO_PIN_10;

    GPIO_InitStruct.Mode = GPIO_MODE_AF_PP;

    GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_HIGH;

    HAL_GPIO_Init(GPIOB, &GPIO_InitStruct);



    GPIO_InitStruct.Pin = GPIO_PIN_11;

    GPIO_InitStruct.Mode = GPIO_MODE_INPUT;

    GPIO_InitStruct.Pull = GPIO_NOPULL;

    HAL_GPIO_Init(GPIOB, &GPIO_InitStruct);



    /* USART3 interrupt Init */

    HAL_NVIC_SetPriority(USART3_IRQn, 5, 0);

    HAL_NVIC_EnableIRQ(USART3_IRQn);

  /* USER CODE BEGIN USART3_MspInit 1 */



  /* USER CODE END USART3_MspInit 1 */

  }

}



void HAL_UART_MspDeInit(UART_HandleTypeDef* uartHandle)

{



  if(uartHandle->Instance==USART1)

  {

  /* USER CODE BEGIN USART1_MspDeInit 0 */



  /* USER CODE END USART1_MspDeInit 0 */

    /* Peripheral clock disable */

    __HAL_RCC_USART1_CLK_DISABLE();

  

    /**USART1 GPIO Configuration    

    PA9     ------> USART1_TX

    PA10     ------> USART1_RX 

    */

    HAL_GPIO_DeInit(GPIOA, GPIO_PIN_9|GPIO_PIN_10);



    /* USART1 interrupt Deinit */

    HAL_NVIC_DisableIRQ(USART1_IRQn);

  /* USER CODE BEGIN USART1_MspDeInit 1 */



  /* USER CODE END USART1_MspDeInit 1 */

  }

  else if(uartHandle->Instance==USART2)

  {

  /* USER CODE BEGIN USART2_MspDeInit 0 */



  /* USER CODE END USART2_MspDeInit 0 */

    /* Peripheral clock disable */

    __HAL_RCC_USART2_CLK_DISABLE();

  

    /**USART2 GPIO Configuration    

    PA2     ------> USART2_TX

    PA3     ------> USART2_RX 

    */

    HAL_GPIO_DeInit(GPIOA, GPIO_PIN_2|GPIO_PIN_3);



    /* USART2 interrupt Deinit */

    HAL_NVIC_DisableIRQ(USART2_IRQn);

  /* USER CODE BEGIN USART2_MspDeInit 1 */



  /* USER CODE END USART2_MspDeInit 1 */

  }

  else if(uartHandle->Instance==USART3)

  {

  /* USER CODE BEGIN USART3_MspDeInit 0 */



  /* USER CODE END USART3_MspDeInit 0 */

    /* Peripheral clock disable */

    __HAL_RCC_USART3_CLK_DISABLE();

  

    /**USART3 GPIO Configuration    

    PB10     ------> USART3_TX

    PB11     ------> USART3_RX 

    */

    HAL_GPIO_DeInit(GPIOB, GPIO_PIN_10|GPIO_PIN_11);



    /* USART3 interrupt Deinit */

    HAL_NVIC_DisableIRQ(USART3_IRQn);

  /* USER CODE BEGIN USART3_MspDeInit 1 */



  /* USER CODE END USART3_MspDeInit 1 */

  }

} 



/* USER CODE BEGIN 1 */

void StartUART_Rx(UART_HandleTypeDef *uartHandle)

{

        if(uartHandle->Instance==USART1)

        {

                HAL_UART_Receive_IT(uartHandle,&a,1);                

        }

        else if(uartHandle->Instance==USART2)

        {

                HAL_UART_Receive_IT(uartHandle,&b,1);

        }

        else if(uartHandle->Instance==USART3)

        {

                HAL_UART_Receive_IT(uartHandle,&c,1);

        }

}



void HAL_UART_RxCpltCallback(UART_HandleTypeDef *uartHandle)

{        

        if(uartHandle->Instance==USART1)

        {

                if(UART1_Callback!=NULL)

                {

                        UART1_Callback(a);

                }

                HAL_UART_Receive_IT(uartHandle,&a,1);                                        

        }

        else if(uartHandle->Instance==USART2)

        {

                if(UART2_Callback!=NULL)

                {

                        UART2_Callback(b);

                }

                HAL_UART_Receive_IT(uartHandle,&b,1);

        }

        else if(uartHandle->Instance==USART3)

        {

                if(UART3_Callback!=NULL)

                {

                        UART3_Callback(c);

                }

                HAL_UART_Receive_IT(uartHandle,&c,1);

        }

}

void HAL_UART_ErrorCallback(UART_HandleTypeDef *uartHandle)

{

        uartHandle->RxState = HAL_UART_STATE_READY;

        if(uartHandle->Instance==USART1)

        {

                HAL_UART_Receive_IT(uartHandle,&a,1);

        }

        else if(uartHandle->Instance==USART2)

        {

                HAL_UART_Receive_IT(uartHandle,&b,1);

        }

        else if(uartHandle->Instance==USART3)

        {

                HAL_UART_Receive_IT(uartHandle,&c,1);

        }

}

/* USER CODE END 1 */



/**

  * @}

  */



/**

  * @}

  */



/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/